administration hospital in pittsburgh in hopes of getting answers. we were met by four armed federal officers. >> hey, how are you? drew griffin with cnn. >> we're with the va police. >> yes, sir. >> this has not been approved by our public affairs office. i cannot allow you on the property. >> i'm calling public affairs right now. >> okay. >> would you you like to call them. >> i can't technically call them. would you like to take the cameras back across the street? >> hold on, i'm on the phone with them. >> after yet reaching just a message machine, the officer told us to leave. >> who told you to kick us off of here? >> it's our policy actually. >> your policy? we can't stand on united states government land with a camera? >> without a legitimate purpose for being here. >> i'm trying to find out why these patients died. >> and being news media while recording, i'm going to have to ask you to leave until it's approved by our public affairs office. >> instead of answering our questions, the va spokesperson has released three media advisories, the la